Error with PHP 8.1

Hi! I'm using a Template made with SP pagebuider.
No problem with PHP 7.4 - But if I try to change PHP version to 8.1 (I have a warning on JOOMLA that 7.4 is not supported).
An error appear in HOME page (footer)
COM_SPPAGEBUILDER_GLOBAL_CURL_NOT_AVAILABLE
You can see at my TEST-SITE: https://www.simmetriainstitute.gq/it/
Check below in the footer close to the google map.
I have evan a 2nd error in this page:
https://www.simmetriainstitute.gq/it/articoli/articoli-per-autore.html
BUt this - I think - is related to the MODULE (custom) I use.